420,135

3 × 5 × 37 × 757

Prime Factor Structure

Factorization String 3 × 5 × 37 × 757

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Total Divisors 16

Divisor Sum (σ) 691,296

Proper Divisor Sum 271,161

Digit Sum / Digital Root 15 (Root: 6)

Adjacent Primes #420103 ← → #420149

1 3 5 15 37 111 185 555 757 2,271 3,785 11,355 28,009 84,027 140,045 420,135

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

420,135 1,260,406 630,203 1,890,610 945,305 2,835,916 1,417,958 708,979 2,126,938 1,063,469 3,190,408 1,595,204 797,602 398,801 1,196,404 598,202 299,101 897,304 448,652 224,326 112,163 336,490 168,245 504,736 252,368 126,184 63,092 31,546 15,773 47,320 23,660 11,830 5,915 17,746 8,873 26,620 13,310 6,655 19,966 9,983 29,950 14,975 44,926 22,463 67,390 33,695 101,086 50,543 151,630 75,815 227,446 113,723 341,170 170,585 511,756 255,878 127,939 383,818 191,909 575,728

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